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run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(-1); function myCheck($in) { return isset($in); } $var1='Something'; $var2='var1'; echo 'Set:' . isset($$var2), "\n"; $var2='nope'; echo 'Set:' . isset($$var2), "\n"; $var2='var1'; echo 'Set:' . myCheck($$var2), "\n"; $var2='nope'; echo 'Set:' . myCheck($$var2), "\n"; ?>
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Set:1 Set: Set:1 Notice: Undefined variable: nope in /in/kaPhU on line 19 Set:
Output for 4.3.0 - 5.0.3
Set:1 Set: Set:1 Notice: Undefined variable: nope in /in/kaPhU on line 19 Set: